Internet2 QBone Initiative

1
Internet2 QBone Initiative

• Build interdomain testbed infrastructure
• Experiment and improve understanding of DiffServ
• Incrementally improve testbed
• Support intradomain interdomain deployment
• Lead and follow IETF standards work
• Some parts of DiffServ architecture cooked
  others far from it
• Our experience will inform standards process
• Openness of RE community gives us an edge
• Users will tolerate the flakiness of an
  experimental infrastructure
• Engineers will share experience and measurement
  data
• QBone as infrastructure that only a graduate
  student could love

2
QBone Architecture (10km view)

• IETF Diff (EF PHB) QBone Serv (QPS)
• QBone Premium Service
• Idea converge on Jacobsons VLL Premium
  service
• Well-defined SLS
• Peak rate R Service MTU M implying a token
  bucket meter
• Near-zero loss
• Low jitter
• Delay variation due to queuing effects should be
  no greater than the packet transmission time of a
  service MTU sized packet
• All bets are off if the reserved interdomain
  route flaps
• Plus important value-adds
• Integrated measurement/dissemination
  infrastructure
• Experimentation with pre-standards inter-domain
  bandwidth brokering and signaling

3
QBone Measurement Architecture1

• Collection
• ? metrics, EF and BE...
• Active metrics
• One-way delay-variation
• One-way loss
• Traceroutes
• e.g. IPPM Surveyors
• Passive metrics
• Load
• Discards (suggested)
• Link bandwidths (suggested)
• EF reservation load
• e.g. OCxMon, RTFM, MIBs

4
QBone Measurement Architecture2

• Dissemination
• HTTP, even for raw data
• real-time archived measurements
• Canonical names for
• Metrics
• Domains
• Standard metric aggregations
• Mostly 5-minute aggregations
• Standard URL name space for
• MRTG-style plots
• Raw ASCII data
• http/////first_hop//..html
  gif txt